package com.guojing.reggie.config;

import com.guojing.reggie.common.JacksonObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;

import java.util.List;

/**
 * @author guojing
 * @Date:2022/8/11 11:40
 */
@Slf4j
@Configuration
public class WebMvcConfig extends WebMvcConfigurationSupport {
    //设置静态资源映射
    @Override
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
        log.info("开始静态资源映射");
      registry.addResourceHandler("/backend/**").addResourceLocations("classpath:/backend/");
      registry.addResourceHandler("/front/**").addResourceLocations("classpath:/front/");
    }

    //扩展mvc框架的消息装转换器
    @Override
    protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        log.info("扩展消息转换器......");
        //创建消息转换器对象
        MappingJackson2HttpMessageConverter messageConverter=new MappingJackson2HttpMessageConverter();
       //设置对象转换器，底层使用 jackson将java对象转化为json
        messageConverter.setObjectMapper(new JacksonObjectMapper());
        //将上面的消息的转换器对象追加到  mvc框架的转换器集合中
        converters.add(0,messageConverter);

        super.extendMessageConverters(converters);
    }
}
